INDEX 



1423 



XANTHINE, 114, 878 

 Xanthoproteic reaction, 103 

 Xylose, 66, 116 



YEASTS, action on amines, 84 



on carbohydrates, 69, 70, 71, 74 

 Yellow spot, 625 

 Yoiiny-Helmholtz theory, 645 



ZEIN, 109 



food -value of, 723 



Zincative, 257 

 Zona fasciculata, 1321 

 Zollner's lines, 661 

 Zona glomerulosa, 1321 

 pellucida, 1367 

 reticulata, 1321 

 Zonula ciliaris, 604 

 Zonule of Zinn, 604 

 Zooid, 925 

 Zymins, 753 

 Zymogen granules, 753 



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